If we are to be destroyed we will do it ourselves by warfare with thermonuclear weaponry.

It is from the progeny of this parent cell that we all take our looks; we still share genes around, and the resemblance of the enzymes of grasses to those of whales is in fact a family resemblance.

The capacity to blunder slightly is the real marvel of DNA. Without this special attribute, we would still be anaerobic bacteria and there would be no music.

Statistically, the probability of any one of us being here is so small that you'd think the mere fact of existing would keep us all in a contented dazzlement of surprise.

In real life, every field of science is incomplete, and most of them - whatever the record of accomplishment during the last 200 years - are still in their very earliest stages.

We owe our lives to the sun... How is it, then, that we feel no gratitude?

The greatest single achievement of nature to date was surely the invention of the molecule DNA.

It is in our genes to understand the universe if we can, to keep trying even if we cannot, and to be enchanted by the act of learning all the way.

I would send the complete works of Johann Sebastian Bach into outer space on the Voyager spacecraft. But that would be boasting.

Animals have genes for altruism, and those genes have been selected in the evolution of many creatures because of the advantage they confer for the continuing survival of the species.

We leave traces of ourselves wherever we go, on whatever we touch.

Eating healthy is not so much about what you eat, but what you don’t eat.

A knife is cutlery in one hand and a weapon in another.

There is no being eloquent for atheism. In that exhausted receiver the mind cannot use its wings, - the clearest proof that it is out of its element.

If knowledge is power, then curiosity is the muscle.

If chocolate is a foretaste of heaven, what does it mean that chocolate is freely available to all?

All human nature vigorously resists grace because grace changes us and the change is painful.

Each decade, I've lived in that decade, so I could easily shed the '20s, the '30s, the '40s.

The death sentence is a barbaric act.

When I play supernatural characters in 'Ghost Rider' or 'City Of Angels,' the possibilities are limitless. The possibilities are endless, you can do so much with that.

It is always possible to bind together a considerable number of people in love, so long as there are other people left over to receive the manifestations of their aggressiveness.